you mean the upper radiator mounts? The big square rubber ones? you woudl be surprised how much PLAY they have. If you ever have your car dynoed, you will think your engine just broke with how much if moves when you go WOT! That is why many people get the poly upper mounts to limit that PLAY. How much is too much? Hard to say. Look at your mounts and if they look worn or torn, replace them.